Five British Muslims were convicted this week of plotting with al Qaida to bomb British targets with fertilizer bombs. Four of the men, including ringleader Omar Khyam, are of Pakistani origin; the other was born in Algeria. Khyam said he and other British Muslims trained with the Kashmiri militant group Lashkar-e-Toiba, which has close ties to al Qaida. They used the Lashkar camps in the Pakistani part of the Kashmir province, the subject of a territorial dispute with India. The prospect of al Qaidatrained terrorists flitting about the world on British passports has the U.S. government worried. Homeland Security Secretary Michael Chertoff has opened talks with the British on how to limit the access of British citizens of Pakistani origin to the U.S.